Don Bozarth wrote: > Nope... page 15 (the scematic) doesn't show the switch... nor does the shot > of the rear panel.(fig 12). This is not the calibrate pot on the front, but > the NOR/CAL switch on the reear panel. > > Don B. > Neither of my control boxes have that switch. Could it be a home-brew mod? 73, Mike NF4L